When I double click Mainwindow.xib file the Interface Builder does not open in MonoTouch?

when I double click Mainwindow.xib file t开发者_运维问答he Interface Builder does not open. I did some research but I could not solve it, I encounter with the same question on many websites but there is no solution.

I do not know the application type is important or not, I mean I have created iPhone Window-Based, iPhone Navigation-Based but the Interface Builder did not open.

Another thing is I use MonoTouch trial version, I do not know if it might be the reason for this. What can I do to solve it? Thanks for advance.

The issue was that interface builder (xib) was not installed. I fixed this by reinstalling everything as indicated on this page: http://monotouch.net/Documentation/Installation

But when I installed the Iphone SDK, I selected all components including the Mac API option.

Hope this helps:)

Benn